Evidence map›Paper›PMID 41225648›Full record

ArticleBMC sports science, medicine & rehabilitation2025

Limb strength asymmetries in elite academy volleyball players: impacts on performance outcomes and insights derived from principal component analysis.

Hakkı Yeşilyurt, Salih Çabuk, İzzet İnce, Erkan Tortu, Süleyman Ulupınar

Abstract read
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Hakkı YeşilyurtFaculty of Medicine, Department of Anatomy, Yüksek İhtisas University, Ankara, Türkiye.
Salih ÇabukFaculty of Sport Sciences, Department of Coaching Education, Erzurum Technical University, Erzurum, Türkiye. salih.cabuk@erzurum.edu.tr.
İzzet İnceFaculty of Sport Sciences, Department of Coaching Education, Ankara Yildirim Beyazit University, Ankara, Türkiye.
Erkan TortuFaculty of Sport Sciences, Department of Coaching Education, Trabzon University, Trabzon, Türkiye.
Süleyman UlupınarFaculty of Sport Sciences, Department of Coaching Education, Erzurum Technical University, Erzurum, Türkiye.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study is twofold: (1) to investigate intra- and inter-limb strength imbalances and asymmetries in elite academy volleyball players and their relationships with sprint performance, kinetics, kinematics, countermovement jump (CMJ), squat jump (SJ), and agility performances and (2) to apply principle component analysis (PCA) to identify and better understand the underlying factors that contributing to volleyball performance.

methodsThirty-seven elite academy volleyball players completed four testing sessions, assessing pro-agility, sprint, isokinetic strength at 60°s

resultsAt 60°s

conclusionsIntra-limb and inter-limb strength imbalances and asymmetries were found to be weakly to moderately associated with sprint performance, sprint kinetics, kinematics, and jump-related outcomes. PCA results further identified jump variables, lower-limb strength, sprint metrics, and intra-limb ratios as key, interconnected contributors to volleyball performance.

Indexed as

Horizontal force-velocity profilePrinciple component analysisSprint kineticsStrength imbalances and asymmetryVolleyball

Identifiers

PMID41225648
PMCPMC12613624

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.